/Engine/Plugins/Media/PixelStreaming/Source/PixelStreamingHMD/Public/PixelStreamingHMD.h
Called on render thread at the start of rendering.
virtual void PreRenderViewFamily_RenderThread ( [FRDGBuilder](API\Runtime\RenderCore\FRDGBuilder) & GraphBuilder, [FSceneViewFamily](API\Runtime\Engine\FSceneViewFamily) & InViewFamily )